Manifolding-platen for type-writing machines.



E. Z. LEWIS.

MANIFOLDING PLATEN FOR TYPE WRITING IAOHINBS.

APPLIOATIOH rum) HAY 20, 1900.

9373374. Patented Oct, 19,1909.

weaaear 1 f/ffw mm w fivxm 9 E. z. LEWIS. MANIFOIQDING PLATEN FOB TYPE WRITING MACHINES.

LYPLIOA'IIOH IILED MAY 28, 1909. V

Patented 099191909.

9 shame-sum 2.

. E. Z. LEWIS.

HANIPOLDING PLATEN FOR TYPE WRITING MACHINES.

APPLICATION FILED MAY 26, 1909.

Patented Oct. 19, 1909.

3 SHEETS-SHEET 3.

EDWARD Z. LEWIS, OF CHICAGQ, ILLINOIS.

MANIFOLDING-PLATEN FOR TYPE-WRITING MACHINES.

Specification of Letters Patent.

Patented ct..19, 1909.

Application filed Kay 26, 1908. Serial No. 498,565.

lb all whom. it may concern:

Be itknown that I, EDWARD Z. Lnwts, a

-' citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Im rovements in Manifolding-Platens for Ty eritin Machines; and I do hereby dec are that tl e following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to an attachment for typewriters to be used in winding a sheet, such, for example, as a bill ng sheet, together with a carbon paper or ribbon upon the platen of the machine in order to make manifold copies. It is particularly adaptable for use in writing upon a multiform billing sheet, such as that described in an application filed by me on May 19th, 1909. Se-

rial Number 496,999, entitled multiform billing sheet in which the sheet has all the forms printed on one side, with the first form of a height equal to the length of the circumference of the platen and the successive forms progressively increased in vertical dimensions both as to height and as to vertical spacing. The carbon paper or ribbon is wound on top of said sheet wlth its copying surface against the printed face of the same. The original typewritten matter is produced on the bottom form of the billing sheet, which will form the outermost roll about the platen.

In carrying out the invention I provlde means for attaching the end of the carbon paper or ribbon to the periphery of the platen, and also preferably provide means for maintaining the carbon pa enonnbbon 1n tension during the time o winding it, together with the billing sheet, upon the platen. The various advantages of my invention will appear as I proceed with my specification.

In the drawings :-Figure 1 is a vertical section through an ordinary type-writer, such, for example, as one of the Oliver type, showing my improved attachment in place thereon. Fig. 2 is a vertical longitudinal section throu h the platen with the Y hinged bar hereinafter described shown at the top of the same. Fig. 3 is a partial top plan view of Fi 2. Fig. 4 is a transverse section through ig. 3 on the line i i thereof. Fig; 5 is a similar section of the same figure on the line '5-5 thereof. Fig. 6 is a transverse section of Fig. 2 on the line 6--6 thereof. Fig. 7 is a to plan view of the tension roller on which t 'e carbon r bbon or paper iswound. Fig. 8 is a longitudinal section of the same. Figs. 9 and 10 represent transverse sections through the platen, showing different stages in the winding of the paper and carbon ribbon or sheet thereon.

A represents the base of the machine; 13 the shift-frame; O the paper-carriage having end plates 0, c and front and rear bars 0 c and D the platen. The platen D is provided on its outer surface with a groove cl running in the direction of its length. At one end of the groove is hinged a bar d which, when closed in the groove d, has its outer face flush with the periphery of the platen. This construction is for the purpose of attachin the forward end of the carbon paper or ribbon to the periphery of the platen. The bar (1, in Figs. 2 and 3, is shown hinged at d to a block (i which is located at one end of the groove 03 and secured therein by screws or in any other convenient manner. At the other end of the groove is a block d on which is pivotally mounted a catch 01 adapted to engage the notched end of the bar (2 and hold the same in closed position. The surface of the platen is cut away at d (Fig. 4) to permit the catch to be pushed to one side when the bar is to be swung into open position. To more rigidly secure the bar d in place, when it is in closed position. the inner end of the block 03 is bifurcated to receive a projecting tongue d located at the end of said bar.

A spring controlled roller E is located on the paper-carriage at the rear of the platen D with its axis parallel thereto. On this roller is normally wound the carbon sheet or ribbon e. The purpose of this roller is to put tension upon the carbon ribbon or paper, so as to cause it to wind smoothly upon the platen. Said roller E is mounted on stub shafts e e, which are journaled loosely in the end plates 0, 0 of the paper-carriage. One of said shafts e is provided with a torsional spring e having one end attached to the shaft and the other end attached to the end plate 0 of the paper-carriage, as seen res ectively at f, f (Figs. 7 and 8). The car on ribbon or sheet 6 is plrovided at one end with marginal tapes E 2 which are attached to is to rotate the roller E in a direction opposite to that in which the platen D is rotated when the billing sheet'or other pa er, to-

ether with the carbon paper or ri bon, is 5 eing wound thereon. The carbon ribbon or paper is thus always held taut and is caused to wind smoothly on the platen.

I referably provide the platen D with suitable gearing, whereby it may be caused to rotate about two and one-half times for one turn of the knob or handle which causes it to rotate. Any suitable or usual gearing may be used for this purpose as, for example, that shown in Figs. 2, 3 and 6. A stub shaft .15 D is journaled in the left hand end plate a and has at its outer end a handle or knob D and at its inner end, between the plate 0 and the end of the platen D, a pinion D which is keyed' to it. Said pinion D engages a smaller pinion D which is formed on the end plate of the platen D concentric with its axis. These pinions are so proportioned that one rotation of the knob will cause from two to three complete rotations of the platen D. The usual operating handle or knob D is also provided at the right hand side of the platen.

In Fig. 1 is shown a sheet of paper F such, for example, as the multiform billing sheet hereinbefore referred to, with its forward edge in engagement with the platen D at the angle made with the platen by the carbon paper or ribbon e. The paper may be directed into this position and temporaril supported therein by any suitable uide as g. It is apparent from the above escription that upon the rotation of the handle orknob D both the sheet and the carbon paper or ribbon will be wound together upon the platen, with the carbon side of the paper or ribbon in contact with the top or printed surface of the sheet upon which the manifold copies are to be made.

In Fig. 9 is illustrated that stage in the winding of thecarbon and billing sheet upon the platen, where the operation is almost complete, the end of the sheet being indicated by It will be noted that one complete roll of the billing sheet, that is to say, the outermost roll, is not'covered by the carbon sheet or ribbon but by the marginal tapes E E which are still wound upon the roller E, thus maintaining the tension in the carbon ribpon or paper. In Fig. 10 the platen D is shown in the angular position which it as sumes after the writing upon it has been completed and it has been rotated in a reverse direction to remove the paper from the platen. The projecting end of the paper is grasped by the fingers and pulled from the platen in the usual way, the tension in the spring-controlled roller E causing the marglnal tapes E, E first and then the carbon ribbon or paper e to be rewound thereupon.

The attachment is then in condition to make manifold copies'and an original upon another sheet.

While I have illustrated and described in this application cert in mechanical details by means of which my invention may be 7 carried out, at the same time, I do not intend to limit myself to the specific construction shown, as it is manifest that this may be "changed or altered without in any way departing from the s irit. ofv m invention. The carbon to be use with my lmproved attachment may be made either of paper or, of cloth, but I prefer thelatter for the reason that it is less likely to tear. In the claims, the term is to be understood as applying to 30 either.

I claim as my invention 2- 1.-In a typewriting machine, a platen, a. carbon ribbon having one end attached to the periphery of said platen, said carbon ribs5 bon being inked on one side and being adapted to be -wound about said platen with the inked side toward the platen.

2. In a typewriting machine, a platen, a carbon ribbon having one end attached to the periphery of said platen, said carbon ribbon being inked on one side and being adapted to be wound about the platen a plurality of times with the inked side toward the platen.

3. In a typewriter, a platen, a carbon rlbbonjsaid carbon ribbon having one end attached to the periphery of the platen in a line parallel to the axis of the platen, said carbon ribbon being inked on one side and being adapted to be wound about the platen with its inked side toward the platen, and mechanism adapted to produce tension in said carbon ribbon.

4. In a typewriter, a platen, a carbon ribbon attached to the periphery of said platen, a spring controlled roller, and marginal tapes at the end of said carbon ribbon by means of which the same is attached to said spring controlled roller.

5. In a typewriting machine, a platen, a carbon ribbon attached at one end to the periphery of said platen, marginal tapes at the other end of said carbon ribbon, and a sprin controlled roller upon which said margina tapes and carbon ribbon are wound.

6. In a typewriting machine, a platen, a groove formed in the face of said platen parallel to its axis, a bar adapted to close said groove with means for looking it in place, a carbon ribbon having one end attached to said platen by means of said bar and groove, and provided at the other with marginal tapes, and a spring controlled roller upon which said carbon ribbon is normally wound.

7. In a typewriting machine, a platen, a groove formed in the face of said platen arallel to its axis, a hinged baradapte to close said groove with means for looking it in place, a spring controlled roller at the 3 rear of said platen, and a carbon ribbon propresence of two witnesses, this 19th day of vided at its rear end with marginal tapes May A. D. 1909. wound about said spring controlled roller and having its forward end secured to said EDWARD LEWIS 5 platen by means of said hinged arm. Witnesses:

In testimony that I claim the foregoing as TAYLOR E. Bnowmz,

my Invention I aflix my signature in the CLARENCE E. MEHLHOPE. 

